As I understand it now, the two options are to always clip trailing spaces when copying to the clipboard or to only clip trailing spaces on multi-line selections. It would be quite helpful to have a third option to never clip trailing spaces. I frequently copy diffs from a terminal window and paste them into an email message to post as patches, and as it is now I can't really use MacSSH for this since the amount of whitespace in the patch always ends up wrong. Otherwise it's a great application.